May be they were sampling based on user (you must be logged on?). While doing such large A/B tests, they should definitely give an option to opt-out. Or at lea

May be they were sampling based on user (you must be logged on?). While doing such large A/B tests, they should definitely give an option to opt-out. Or at least a prominent feedback button to tell them how bad is their new design. It is as if Google will A/B test a new design and no-one will notice it?